actions {
  new_stream {
    request_headers {
      headers {
        key: ":method"
        value: "GET"
      }
      headers {
        key: ":path"
        value: "/"
      }
      headers {
        key: ":scheme"
        value: "http"
      }
      headers {
        key: ":authority"
        value: "foo.com"
      }
    }
  }
}
actions {
  mutate {
    buffer: 2
    offset: 2
    value: 8
  }
}
actions {
  mutate {
    buffer: 2
    offset: 3
    value: 7
  }
}
actions {
  mutate {
    buffer: 2
    offset: 8
    value: 0
  }
}
actions { quiesce_drain {} }